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Introduction - three-dimensional geological mapping

This workshop is the seventh in an ongoing series primarily designed to share insights among geological mappers who are maximizing the use of variable and often voluminous subsurface information in order to produce 3D models that map sediment and rock, with an emphasis on the needs of
groundwater management. The first workshop in this series was held in Normal, Illinois, ten years ago this past April, (Berg and Thorleifson, 2001). This year's workshop reflects the evolving focus of the series from issues of data quality, datasets, and methods for data collection to a focus at the
Geological Survey Organization level on institutional implementation of modelling standards at state, provincial, and national scales. Since the 2009 workshop in Portland two notable outcomes of the workshop series have been published. Firstly, Thorleifson et al. (2010) discussed the emergence of 3D
mapping at Geological Survey Organizations (GSO). Secondly, Berg et al. (2011) edited a collection of papers on approaches to 3D geological mapping at several geological survey organizations from Europe, North America, and Australia.
This year's workshop continues the trend of increased focus on work at GSOs with 11 of 15 contributions focused on this subject. The four remaining papers, however, maintain the essential link to research on methods.

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The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.